Answer:
D
Step-by-step explanation:
 
        
             
        
        
        
d1 = 51(t)
d2 = 71(8 - t)
d1 + d2 = 508
and now you just have to solve for t.
 
        
             
        
        
        
Answer:
b
Step-by-step explanation:
I mean I believe its b it looks like theres three
 
        
             
        
        
        
The number which could be added to both sides of the equation to complete the square is; -2.25.
<h3>Which number could be added to both sides of this quadratic equation to complete the square?</h3>
The quadratic equations give in the task content is; 1=x²-3x. Hence, to express the equation by completing the square method; we have;
1 - 2.25 = (x -3/2)² - 2.25
Hence, the number which should be added to both sides of the equation is; -2.25.
Read more on completing the square;
brainly.com/question/10449635
#SPJ1
 
        
             
        
        
        
Answer:
3750
Step-by-step explanation:
each number is being multiplied by five
6*5=30
30*5=150
150*5=750
750*5= 3750